Extant has an interesting premise but the execution feels clumsy and overworked. While it is still a good Sci-fi show I think it still needs some time to develop and find it's stride. The positives include the great production values and that it has a blockbuster movie feel. I also think it has the potential to be better it just needs to up the excitement level.
Personally, I'm not thrilled with the casting and find Halle Berry's performance to be quite weak. She needs drama roles to shine but doesn't fare so well with "everyday/normal" roles. It just feels too bland and forced. The rest of the cast are fine, not fantastic, but they do their job.
Overall I think as the story unfolds it will keep me interested. I have noticed that each episode is slightly more interesting than the last so that's a good sign.
